From: Mel Gorman <mgorman@techsingularity.net>
To: Mike Galbraith <efault@gmx.de>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: mm: LTP/memcg testcase regression induced by 8cd7c588decf..66ce520bb7c2 series
Date: Tue, 23 Nov 2021 09:13:04 +0000 [thread overview]
Message-ID: <20211123091304.GC3366@techsingularity.net> (raw)
In-Reply-To: <99e779783d6c7fce96448a3402061b9dc1b3b602.camel@gmx.de>
On Sun, Nov 21, 2021 at 11:57:20AM +0100, Mike Galbraith wrote:
> Greetings,
>
> FYI, something in this series causes LTP controllers::memcg_regression
> testcase to hang forever. Verified via brute force revert of the lot.
>
> After letting box moan for 4.5 hours, I poked ^C repeatedly, but runltp
> didn't exit/recover gracefully, and ps hung, so I nuked the box. All
> memcg_test_1 instances were stuck in reclaim_throttle().
>
I'll see can I reproduce this but do you know offhand what the test is
doing and what the expected outcome is? A possibility is that this is a
test that is driving the machine near OOM (or at least memcg OOM) and
getting throttled instead of getting killed.
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2021-11-23 9:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-21 10:57 mm: LTP/memcg testcase regression induced by 8cd7c588decf..66ce520bb7c2 series Mike Galbraith
2021-11-21 13:51 ` Thorsten Leemhuis
2021-11-22 6:46 ` Mike Galbraith
2021-11-22 7:41 ` Mike Galbraith
2021-11-23 9:13 ` Mel Gorman [this message]
2021-11-23 11:06 ` Mike Galbraith
2021-11-23 11:18 ` Mike Galbraith
2021-11-23 13:12 ` Mike Galbraith
2021-11-23 14:28 ` Mike Galbraith
2021-11-24 14:56 ` Mel Gorman
2021-11-24 16:21 ` Mike Galbraith
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